| org.apache.tapestry.Binding
All known Subclasses: org.apache.tapestry.internal.bindings.AbstractBinding, org.apache.tapestry.internal.services.InheritedBinding,
| Binding | | public interface Binding extends AnnotationProvider(Code) | | A binding is a connection between a component and its container (another component), that allows
the embedded component to gain access to resources defined by the container. Resources
can represent any kind of value that can be obtained from the parent component, but is often a
JavaBean property that can be read and updated. Different implementations of Binding as used to
access different kinds of resources of the container.
A binding ultimately must provide access to the underlying annotations. In most cases, there are
no annotations, but bindings that ultimate invoke methods or read and update fields must provide
access to those annotations.
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| Method Summary | |
| Object | get()
Reads the current value of the property (or other resource). | | Class | getBindingType()
Returns the type of the binding, either the type of resource exposed by the binding, or the
type of the property bound. | | boolean | isInvariant()
Returns true if the value of the binding does not ever change. | | void | set(Object value)
Updates the current value. |
| get | | Object get()(Code) | | Reads the current value of the property (or other resource). When reading properties of
objects that are primitive types, this will return an instance of the wrapper type. In some
cases, a binding is read only and this method will throw a runtime exception.
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| getBindingType | | Class getBindingType()(Code) | | Returns the type of the binding, either the type of resource exposed by the binding, or the
type of the property bound.
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| isInvariant | | boolean isInvariant()(Code) | | Returns true if the value of the binding does not ever change. Components will often cache
such values aggressively.
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| set | | void set(Object value)(Code) | | Updates the current value. Most types of bindings are read-only, and this method will throw a
runtime exception. It is the caller's responsibility to ensure that the value passed in is of
the appropriate type.
Parameters:
value - |
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